18992500

素因数分解:

$2^2\times 5^4\times {\mathrm{71}}^1\times {\mathrm{107}}^1$

素因数の和:202

約数の個数: 60

約数和(自身を含む): 42511392

約数和(自身を除く): 23518892

約数列:

[1, 2, 4, 5, 10, 20, 25, 50, 71, 100, 107, 125, 142, 214, 250, 284, 355, 428, 500, 535, 625, 710, 1070, 1250, 1420, 1775, 2140, 2500, 2675, 3550, 5350, 7100, 7597, 8875, 10700, 13375, 15194, 17750, 26750, 30388, 35500, 37985, 44375, 53500, 66875, 75970, 88750, 133750, 151940, 177500, 189925, 267500, 379850, 759700, 949625, 1899250, 3798500, 4748125, 9496250, 18992500]

約数ペア:

[(1, 18992500), (2, 9496250), (4, 4748125), (5, 3798500), (10, 1899250), (20, 949625), (25, 759700), (50, 379850), (71, 267500), (100, 189925), (107, 177500), (125, 151940), (142, 133750), (214, 88750), (250, 75970), (284, 66875), (355, 53500), (428, 44375), (500, 37985), (535, 35500), (625, 30388), (710, 26750), (1070, 17750), (1250, 15194), (1420, 13375), (1775, 10700), (2140, 8875), (2500, 7597), (2675, 7100), (3550, 5350)]